furtive

详细解释:a. 秘密的, 隐密的, 偷偷摸摸的

词型变化：

名词:furtiveness副词:furtively

英语解释：

形容词 furtive:

marked by quiet and caution and secrecy; taking pains to avoid being observed同义词：sneak, sneaky, stealthy, surreptitious